Answer:
so you just use the equation to get the formula and extract the common denominator
Step-by-step explanation:
because i said so
Answer:
$9
Step-by-step explanation:
divide 45 and 5, you get 9
25 because there's 5 people so you take 5 times 5
Answer:
x^2 -81
Step-by-step explanation:
(x+9)(x-9)
FOIL
first x*x = x^2
outer -9x
inner 9x
last -9*9 = -81
Add them together
x^2 -9x+9x -81
Combine like terms
x^2 -81
powers of 10 or use e notation.
Example: 3.45 x 10^5 or 3.455
